Embolism and thrombosis of arteries of the upper extremities

This code signifies the blockage of an artery in the arm, forearm, or hand due to an embolus (a traveling clot or foreign body) or a thrombus (a clot formed in situ). This arterial occlusion restricts blood flow, potentially leading to ischemia, pain, and tissue damage in the affected upper extremity.

Apply this code when documentation clearly indicates an acute or chronic arterial occlusion in the upper limb caused by either an embolism or thrombosis. Supporting documentation should include imaging reports (e.g., ultrasound, angiography) confirming the arterial blockage and the etiology (embolism vs. thrombosis), along with clinical notes detailing symptoms like sudden pain, pallor, pulselessness, or paresthesia in the arm.

• Differentiate between embolism and thrombosis; if unspecified, this code is appropriate.
• Ensure the documentation specifies an arterial blockage, not venous, as different codes apply.
• Consider sequencing this code as the primary diagnosis if it is the reason for the encounter, followed by any underlying conditions contributing to the embolism/thrombosis (e.g., atrial fibrillation).